-;;;; the VM definition arithmetic VOPs for the Alpha
+;;;; the VM definition arithmetic VOPs for the SPARC
;;;; This software is part of the SBCL system. See the README file for
;;;; more information.
(define-vop (fast-logand/signed-unsigned=>unsigned
fast-logand/unsigned=>unsigned)
- (:args (x :target r :scs (signed-reg))
- (y :scs (unsigned-reg unsigned-stack)))
+ (:args (x :scs (signed-reg))
+ (y :target r :scs (unsigned-reg)))
(:arg-types signed-num unsigned-num))
(define-vop (fast-logand/unsigned-signed=>unsigned
fast-logand/unsigned=>unsigned)
(:args (x :target r :scs (unsigned-reg))
- (y :scs (signed-reg signed-stack)))
+ (y :scs (signed-reg)))
(:arg-types unsigned-num signed-num))
;;; Special case fixnum + and - that trap on overflow. Useful when we
;;; don't know that the output type is a fixnum.
-;;; I (toy@rtp.ericsson.se) took these out. They don't seem to be
-;;; used anywhere at all.
+;;; I (Raymond Toy) took these out. They don't seem to be used anywhere at all.
#+nil
(progn
(define-vop (+/fixnum fast-+/fixnum=>fixnum)
(:temporary (:scs (signed-reg)) y-int)
(:vop-var vop)
(:save-p :compute-only)
- (:guard #!+(or :sparc-v8 (and :sparc-v9 (not :sparc-64))) t
- #!-(or :sparc-v8 (and :sparc-v9 (not :sparc-64))) nil)
+ (:guard (or (member :sparc-v8 *backend-subfeatures*)
+ (and (member :sparc-v9 *backend-subfeatures*)
+ (not (member :sparc-64 *backend-subfeatures*)))))
(:generator 12
(let ((zero (generate-error-code vop division-by-zero-error x y)))
(inst cmp y zero-tn)
(inst sra r x 31)
(inst wry r)
;; Remove tag bits so Q and R will be tagged correctly.
- (inst sra y-int y fixnum-tag-bits)
+ (inst sra y-int y n-fixnum-tag-bits)
(inst nop)
(inst nop)
(:temporary (:scs (signed-reg)) r)
(:vop-var vop)
(:save-p :compute-only)
- (:guard #!+(or :sparc-v8 (and :sparc-v9 (not :sparc-64))) t
- #!-(or :sparc-v8 (and :sparc-v9 (not :sparc-64))) nil)
+ (:guard (or (member :sparc-v8 *backend-subfeatures*)
+ (and (member :sparc-v9 *backend-subfeatures*)
+ (not (member :sparc-64 *backend-subfeatures*)))))
(:generator 12
(let ((zero (generate-error-code vop division-by-zero-error x y)))
(inst cmp y zero-tn)
- (inst b :eq zero #!+:sparc-v9 :pn)
+ (if (member :sparc-v9 *backend-subfeatures*)
+ (inst b :eq zero :pn)
+ (inst b :eq zero))
;; Extend the sign of X into the Y register
- (inst sra r x 31)
+ (inst sra r x 31)
(inst wry r)
(inst nop)
(inst nop)
(:temporary (:scs (unsigned-reg)) r)
(:vop-var vop)
(:save-p :compute-only)
- (:guard #!+(or :sparc-v8 (and :sparc-v9 (not :sparc-64))) t
- #!-(or :sparc-v8 (and :sparc-v9 (not :sparc-64))) nil)
+ (:guard (or (member :sparc-v8 *backend-subfeatures*)
+ (and (member :sparc-v9 *backend-subfeatures*)
+ (not (member :sparc-64 *backend-subfeatures*)))))
(:generator 8
(let ((zero (generate-error-code vop division-by-zero-error x y)))
(inst cmp y zero-tn)
- (inst b :eq zero #!+:sparc-v9 :pn)
- (inst wry zero-tn) ; Clear out high part
+ (if (member :sparc-v9 *backend-subfeatures*)
+ (inst b :eq zero :pn)
+ (inst b :eq zero))
+ (inst wry zero-tn) ; Clear out high part
(inst nop)
(inst nop)
(inst nop)
(unless (location= quo q)
(inst move quo q)))))
-#!+:sparc-v9
(define-vop (fast-v9-truncate/signed=>signed fast-safe-arith-op)
(:translate truncate)
(:args (x :scs (signed-reg))
(:temporary (:scs (signed-reg)) r)
(:vop-var vop)
(:save-p :compute-only)
- (:guard #!+:sparc-64 t #!-:sparc-64 nil)
+ (:guard (member :sparc-64 *backend-subfeatures*))
(:generator 8
(let ((zero (generate-error-code vop division-by-zero-error x y)))
(inst cmp y zero-tn)
- (inst b :eq zero #!+:sparc-v9 :pn)
+ (inst b :eq zero :pn)
;; Sign extend the numbers, just in case.
- (inst sra x 0)
+ (inst sra x 0)
(inst sra y 0)
(inst sdivx q x y)
;; Compute remainder
(:temporary (:scs (unsigned-reg)) r)
(:vop-var vop)
(:save-p :compute-only)
- (:guard #!+:sparc-64 t #!-:sparc-64 nil)
+ (:guard (member :sparc-64 *backend-subfeatures*))
(:generator 8
(let ((zero (generate-error-code vop division-by-zero-error x y)))
(inst cmp y zero-tn)
- (inst b :eq zero #!+:sparc-v9 :pn)
+ (inst b :eq zero :pn)
;; Zap the higher 32 bits, just in case
- (inst srl x 0)
+ (inst srl x 0)
(inst srl y 0)
(inst udivx q x y)
;; Compute remainder
;;; Shifting
-(macrolet
- ((frob (name sc-type type shift-right-inst)
- `(define-vop (,name)
- (:note "inline ASH")
- (:args (number :scs (,sc-type) :to :save)
- (amount :scs (signed-reg immediate)))
- (:arg-types ,type signed-num)
- (:results (result :scs (,sc-type)))
- (:result-types ,type)
- (:translate ash)
- (:policy :fast-safe)
- (:temporary (:sc non-descriptor-reg) ndesc)
- (:generator 5
- (sc-case amount
- #!+:sparc-v9
- (signed-reg
- (let ((done (gen-label))
- (positive (gen-label)))
- (inst cmp amount)
- (inst b :ge positive)
- (inst neg ndesc amount)
- ;; ndesc = max(-amount, 31)
- (inst cmp ndesc 31)
- (inst cmove :ge ndesc 31)
- (inst b done)
- (inst ,shift-right-inst result number ndesc)
- (emit-label positive)
- ;; The result-type assures us that this shift will not
- ;; overflow.
- (inst sll result number amount)
- ;; We want a right shift of the appropriate size.
- (emit-label done)))
- #!-:sparc-v9
- (signed-reg
- (let ((positive (gen-label))
- (done (gen-label)))
- (inst cmp amount)
- (inst b :ge positive)
- (inst neg ndesc amount)
- (inst cmp ndesc 31)
- (inst b :le done)
- (inst ,shift-right-inst result number ndesc)
- (inst b done)
- (inst ,shift-right-inst result number 31)
-
- (emit-label positive)
- ;; The result-type assures us that this shift will not overflow.
- (inst sll result number amount)
-
- (emit-label done)))
- (immediate
- (let ((amount (tn-value amount)))
- (if (minusp amount)
- (let ((amount (min 31 (- amount))))
- (inst ,shift-right-inst result number amount))
- (inst sll result number amount)))))))))
- (frob fast-ash/signed=>signed signed-reg signed-num sra)
- (frob fast-ash/unsigned=>unsigned unsigned-reg unsigned-num srl))
+(define-vop (fast-ash/signed=>signed)
+ (:note "inline ASH")
+ (:args (number :scs (signed-reg) :to :save)
+ (amount :scs (signed-reg immediate) :to :save))
+ (:arg-types signed-num signed-num)
+ (:results (result :scs (signed-reg)))
+ (:result-types signed-num)
+ (:translate ash)
+ (:policy :fast-safe)
+ (:temporary (:sc non-descriptor-reg) ndesc)
+ (:generator 5
+ (sc-case amount
+ (signed-reg
+ (let ((done (gen-label)))
+ (inst cmp amount)
+ (inst b :ge done)
+ ;; The result-type assures us that this shift will not
+ ;; overflow.
+ (inst sll result number amount)
+ (inst neg ndesc amount)
+ (inst cmp ndesc 31)
+ (if (member :sparc-v9 *backend-subfeatures*)
+ (progn
+ (inst cmove :ge ndesc 31)
+ (inst sra result number ndesc))
+ (progn
+ (inst b :le done)
+ (inst sra result number ndesc)
+ (inst sra result number 31)))
+ (emit-label done)))
+ (immediate
+ (bug "IMMEDIATE case in ASH VOP; should have been transformed")))))
+
+(define-vop (fast-ash/unsigned=>unsigned)
+ (:note "inline ASH")
+ (:args (number :scs (unsigned-reg) :to :save)
+ (amount :scs (signed-reg immediate) :to :save))
+ (:arg-types unsigned-num signed-num)
+ (:results (result :scs (unsigned-reg)))
+ (:result-types unsigned-num)
+ (:translate ash)
+ (:policy :fast-safe)
+ (:temporary (:sc non-descriptor-reg) ndesc)
+ (:generator 5
+ (sc-case amount
+ (signed-reg
+ (let ((done (gen-label)))
+ (inst cmp amount)
+ (inst b :ge done)
+ ;; The result-type assures us that this shift will not
+ ;; overflow.
+ (inst sll result number amount)
+ (inst neg ndesc amount)
+ (inst cmp ndesc 32)
+ (if (member :sparc-v9 *backend-subfeatures*)
+ (progn
+ (inst srl result number ndesc)
+ (inst cmove :ge result zero-tn))
+ (progn
+ (inst b :lt done)
+ (inst srl result number ndesc)
+ (move result zero-tn)))
+ (emit-label done)))
+ (immediate
+ (bug "IMMEDIATE case in ASH VOP; should have been transformed")))))
;; Some special cases where we know we want a left shift. Just do the
;; shift, instead of checking for the sign of the shift.
(:policy :fast-safe)
(:generator ,cost
;; The result-type assures us that this shift will not
- ;; overflow. And for fixnum's, the zero bits that get
+ ;; overflow. And for fixnums, the zero bits that get
;; shifted in are just fine for the fixnum tag.
(sc-case amount
((signed-reg unsigned-reg)
(define-vop (fast-v8-*/fixnum=>fixnum fast-fixnum-binop)
(:temporary (:scs (non-descriptor-reg)) temp)
(:translate *)
- (:guard #!+(or :sparc-v8 (and :sparc-v9 (not :sparc-64))) t
- #!-(or :sparc-v8 (and :sparc-v9 (not :sparc-64))) nil)
+ (:guard (or (member :sparc-v8 *backend-subfeatures*)
+ (and (member :sparc-v9 *backend-subfeatures*)
+ (not (member :sparc-64 *backend-subfeatures*)))))
(:generator 2
;; The cost here should be less than the cost for
;; */signed=>signed. Why? A fixnum product using signed=>signed
;; has to convert both args to signed-nums. But using this, we
;; don't have to and that saves an instruction.
- (inst sra temp y fixnum-tag-bits)
+ (inst sra temp y n-fixnum-tag-bits)
(inst smul r x temp)))
+(define-vop (fast-v8-*-c/fixnum=>fixnum fast-safe-arith-op)
+ (:args (x :target r :scs (any-reg zero)))
+ (:info y)
+ (:arg-types tagged-num
+ (:constant (and (signed-byte 13) (not (integer 0 0)))))
+ (:results (r :scs (any-reg)))
+ (:result-types tagged-num)
+ (:note "inline fixnum arithmetic")
+ (:translate *)
+ (:guard (or (member :sparc-v8 *backend-subfeatures*)
+ (and (member :sparc-v9 *backend-subfeatures*)
+ (not (member :sparc-64 *backend-subfeatures*)))))
+ (:generator 1
+ (inst smul r x y)))
+
(define-vop (fast-v8-*/signed=>signed fast-signed-binop)
(:translate *)
- (:guard #!+(or :sparc-v8 (and :sparc-v9 (not :sparc-64))) t
- #!-(or :sparc-v8 (and :sparc-v9 (not :sparc-64))) nil)
+ (:guard (or (member :sparc-v8 *backend-subfeatures*)
+ (and (member :sparc-v9 *backend-subfeatures*)
+ (not (member :sparc-64 *backend-subfeatures*)))))
(:generator 3
(inst smul r x y)))
+(define-vop (fast-v8-*-c/signed=>signed fast-signed-binop-c)
+ (:translate *)
+ (:guard (or (member :sparc-v8 *backend-subfeatures*)
+ (and (member :sparc-v9 *backend-subfeatures*)
+ (not (member :sparc-64 *backend-subfeatures*)))))
+ (:generator 2
+ (inst smul r x y)))
+
(define-vop (fast-v8-*/unsigned=>unsigned fast-unsigned-binop)
(:translate *)
- (:guard #!+(or :sparc-v8 (and :sparc-v9 (not :sparc-64))) t
- #!-(or :sparc-v8 (and :sparc-v9 (not :sparc-64))) nil)
+ (:guard (or (member :sparc-v8 *backend-subfeatures*)
+ (and (member :sparc-v9 *backend-subfeatures*)
+ (not (member :sparc-64 *backend-subfeatures*)))))
(:generator 3
(inst umul r x y)))
+(define-vop (fast-v8-*-c/unsigned=>unsigned fast-unsigned-binop-c)
+ (:translate *)
+ (:guard (or (member :sparc-v8 *backend-subfeatures*)
+ (and (member :sparc-v9 *backend-subfeatures*)
+ (not (member :sparc-64 *backend-subfeatures*)))))
+ (:generator 2
+ (inst umul r x y)))
+
;; The smul and umul instructions are deprecated on the Sparc V9. Use
;; mulx instead.
(define-vop (fast-v9-*/fixnum=>fixnum fast-fixnum-binop)
(:temporary (:scs (non-descriptor-reg)) temp)
(:translate *)
- (:guard #!+:sparc-64 t #!-:sparc-64 nil)
+ (:guard (member :sparc-64 *backend-subfeatures*))
(:generator 4
- (inst sra temp y fixnum-tag-bits)
+ (inst sra temp y n-fixnum-tag-bits)
(inst mulx r x temp)))
(define-vop (fast-v9-*/signed=>signed fast-signed-binop)
(:translate *)
- (:guard #!+:sparc-64 t #!-:sparc-64 nil)
+ (:guard (member :sparc-64 *backend-subfeatures*))
(:generator 3
(inst mulx r x y)))
(define-vop (fast-v9-*/unsigned=>unsigned fast-unsigned-binop)
(:translate *)
- (:guard #!+:sparc-64 t #!-:sparc-64 nil)
+ (:guard (member :sparc-64 *backend-subfeatures*))
(:generator 3
(inst mulx r x y)))
(:affected)
(:policy :fast-safe))
-(deftype integer-with-a-bite-out (s bite)
- (cond ((eq s '*) 'integer)
- ((and (integerp s) (> s 1))
- (let ((bound (ash 1 (1- s))))
- `(integer ,(- bound) ,(- bound bite 1))))
- (t
- (error "Bad size specified for SIGNED-BYTE type specifier: ~S." s))))
-
(define-vop (fast-conditional/fixnum fast-conditional)
(:args (x :scs (any-reg zero))
(y :scs (any-reg zero)))
(:args (digit :scs (unsigned-reg)))
(:arg-types unsigned-num)
(:results (result :scs (descriptor-reg)))
- (:guard #!-:sparc-v9 t #!+:sparc-v9 nil)
+ (:guard (not (member :sparc-v9 *backend-subfeatures*)))
(:generator 3
(let ((done (gen-label)))
(inst cmp digit)
(:args (digit :scs (unsigned-reg)))
(:arg-types unsigned-num)
(:results (result :scs (descriptor-reg)))
- (:guard #!+:sparc-v9 t #!-:sparc-v9 nil)
+ (:guard (member :sparc-v9 *backend-subfeatures*))
(:generator 3
(inst cmp digit)
(load-symbol result t)
(type (or tn (signed-byte 13)) multiplicand))
;; It seems that emit-multiply is only used to do an unsigned
;; multiply, so the code only does an unsigned multiply.
- #!+:sparc-64
- (progn
- ;; Take advantage of V9's 64-bit multiplier.
- ;;
- ;; Make sure the multiplier and multiplicand are really
- ;; unsigned 64-bit numbers.
- (inst srl multiplier 0)
- (inst srl multiplicand 0)
+ (cond
+ ((member :sparc-64 *backend-subfeatures*)
+ ;; Take advantage of V9's 64-bit multiplier.
+ ;;
+ ;; Make sure the multiplier and multiplicand are really
+ ;; unsigned 64-bit numbers.
+ (inst srl multiplier 0)
+ (inst srl multiplicand 0)
- ;; Multiply the two numbers and put the result in
- ;; result-high. Copy the low 32-bits to result-low. Then
- ;; shift result-high so the high 32-bits end up in the low
- ;; 32-bits.
- (inst mulx result-high multiplier multiplicand)
- (inst move result-low result-high)
- (inst srax result-high 32))
- #!+(and (not :sparc-64) (or :sparc-v8 :sparc-v9))
- (progn
- ;; V8 has a multiply instruction. This should also work for
- ;; the V9, but umul and the Y register is deprecated on the
- ;; V9.
- (inst umul result-low multiplier multiplicand)
- (inst rdy result-high))
- #!+(and (not :sparc-64) (not (or :sparc-v8 :sparc-v9)))
- (let ((label (gen-label)))
- (inst wry multiplier)
- (inst andcc result-high zero-tn)
- ;; Note: we can't use the Y register until three insts
- ;; after it's written.
- (inst nop)
- (inst nop)
- (dotimes (i 32)
- (inst mulscc result-high multiplicand))
- (inst mulscc result-high zero-tn)
- (inst cmp multiplicand)
- (inst b :ge label)
- (inst nop)
- (inst add result-high multiplier)
- (emit-label label)
- (inst rdy result-low)))
+ ;; Multiply the two numbers and put the result in
+ ;; result-high. Copy the low 32-bits to result-low. Then
+ ;; shift result-high so the high 32-bits end up in the low
+ ;; 32-bits.
+ (inst mulx result-high multiplier multiplicand)
+ (inst move result-low result-high)
+ (inst srax result-high 32))
+ ((or (member :sparc-v8 *backend-subfeatures*)
+ (member :sparc-v9 *backend-subfeatures*))
+ ;; V8 has a multiply instruction. This should also work for
+ ;; the V9, but umul and the Y register is deprecated on the
+ ;; V9.
+ (inst umul result-low multiplier multiplicand)
+ (inst rdy result-high))
+ (t
+ (let ((label (gen-label)))
+ (inst wry multiplier)
+ (inst andcc result-high zero-tn)
+ ;; Note: we can't use the Y register until three insts
+ ;; after it's written.
+ (inst nop)
+ (inst nop)
+ (dotimes (i 32)
+ (inst mulscc result-high multiplicand))
+ (inst mulscc result-high zero-tn)
+ (inst cmp multiplicand)
+ (inst b :ge label)
+ (inst nop)
+ (inst add result-high multiplier)
+ (emit-label label)
+ (inst rdy result-low)))))
(define-vop (bignum-mult-and-add-3-arg)
(:translate sb!bignum::%multiply-and-add)
(:results (digit :scs (unsigned-reg)))
(:result-types unsigned-num)
(:generator 1
- (inst sra digit fixnum fixnum-tag-bits)))
+ (inst sra digit fixnum n-fixnum-tag-bits)))
(define-vop (bignum-floor)
(:translate sb!bignum::%floor)
(:results (quo :scs (unsigned-reg) :from (:argument 1))
(rem :scs (unsigned-reg) :from (:argument 0)))
(:result-types unsigned-num unsigned-num)
- (:guard #!+(not (or :sparc-v8 :sparc-v9)) t
- #!-(not (or :sparc-v8 :sparc-v9)) nil)
(:generator 300
(move rem div-high)
(move quo div-low)
(:temporary (:scs (unsigned-reg) :target quo) q)
;; This vop is for a v8 or v9, provided we're also not using
;; sparc-64, for which there a special sparc-64 vop.
- (:guard #!+(or :sparc-v8 (and :sparc-v9 (not :sparc-64))) t
- #!-(or :sparc-v8 (and :sparc-v9 (not :sparc-64))) nil)
+ (:guard (or (member :sparc-v8 *backend-subfeatures*)
+ (member :sparc-v9 *backend-subfeatures*)))
(:generator 15
(inst wry div-high)
(inst nop)
(:results (quo :scs (unsigned-reg))
(rem :scs (unsigned-reg)))
(:result-types unsigned-num unsigned-num)
- (:guard #!+:sparc-64 t #!-:sparc-64 nil)
+ (:guard (member :sparc-64 *backend-subfeatures*))
(:generator 5
;; Set dividend to be div-high and div-low
(inst sllx dividend div-high 32)
(:generator 1
(sc-case res
(any-reg
- (inst sll res digit fixnum-tag-bits))
+ (inst sll res digit n-fixnum-tag-bits))
(signed-reg
(move res digit)))))
\f
;; Need these so constant folding works with the deftransform.
-(defun ash-right-signed (num shift)
- (declare (type (signed-byte #.sb!vm:n-word-bits) num)
- (type (integer 0 #.(1- sb!vm:n-word-bits)) shift))
- (ash-right-signed num shift))
+;; FIXME KLUDGE ew yuk.
+#-sb-xc-host
+(progn
+ (defun ash-right-signed (num shift)
+ (ash-right-signed num shift))
+
+ (defun ash-right-unsigned (num shuft)
+ (ash-right-unsigned num shift)))
+
+(in-package "SB!C")
-(defun ash-right-unsigned (num shift)
- (declare (type (unsigned-byte #.sb!vm:n-word-bits) num)
- (type (integer 0 #.(1- sb!vm:n-word-bits)) shift))
- (ash-right-unsigned num shift))
+(deftransform * ((x y)
+ ((unsigned-byte 32) (constant-arg (unsigned-byte 32)))
+ (unsigned-byte 32))
+ "recode as shifts and adds"
+ (let ((y (continuation-value y)))
+ (multiple-value-bind (result adds shifts)
+ (ub32-strength-reduce-constant-multiply 'x y)
+ (cond
+ ;; we assume, perhaps foolishly, that good SPARCs don't have an
+ ;; issue with multiplications. (Remember that there's a
+ ;; different transform for converting x*2^k to a shift).
+ ((member :sparc-64 *backend-subfeatures*) (give-up-ir1-transform))
+ ((or (member :sparc-v9 *backend-subfeatures*)
+ (member :sparc-v8 *backend-subfeatures*))
+ ;; breakeven point as measured by Raymond Toy
+ (when (> (+ adds shifts) 9)
+ (give-up-ir1-transform))))
+ (or result 0))))
;; If we can prove that we have a right shift, just do the right shift
;; instead of calling the inline ASH which has to check for the
;; direction of the shift at run-time.
-(in-package "SB!C")
-
(deftransform ash ((num shift) (integer integer))
(let ((num-type (continuation-type num))
(shift-type (continuation-type shift)))
projects / sbcl.git / blobdiff